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*data for   ICSD #43950
Coll Code   43950
Rec  Date   2000/07/15
Chem Name   Gallium Arsenide (1/1) - Hp
Structured  Ga As
Sum         As1 Ga1
ANX         AX
D(calc)     7.73
Title       Structural phase transitions in Ga As to 108 GPa
Author(s)   Weir, S.T.;Vohra, J.K.;Vanderborgh, C.A.;Ruoff, A.L.
Reference   Physical Review, Serie 3. B - Condensed Matter (18,1978-)
            (1989), 39, 1280-1285
Unit Cell   4.92(1) 4.79(1) 2.635(6) 90. 90. 90.
Vol         62.1
Z           2
Space Group I m m 2
SG Number   44
Cryst Sys   orthorhombic
Pearson     oI4
Wyckoff     b a
R Value     .177
Red Cell    I  2.635 3.677 3.677 81.275 69.006 69.006 31.049
Trans Red   0.000 0.000 -1.000 / 0.500 0.500 -0.500 / 0.500 -0.500 -0.500
Comments    Stable above 24 GPa
            The structure has been assigned a PDF number (calculated
            powder diffraction data): 01-089-3290
            Pressure in MPa: 28100
            X-ray diffraction (powder)
            At least one temperature factor missing in the paper.
Atom  #   OX   SITE      x           y           z           SOF      H
Ga   1  +3    2 b   0           0.5         0.425          1.         0   
As   1  -3    2 a   0           0           0              1.         0   
*end for    ICSD #43950
5Â¥2009-09-09 08:59:50
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²é¿´È«²¿ 12 ¸ö»Ø´ð

xwyan

гæ (ÕýʽдÊÖ)

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2Â¥2009-09-08 22:59:15
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

bote

you can find them in Handbook of Chemistry and physics

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Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
Handbook of Chemistry and physics
or
III-V compound semiconductor from
http://en.wikipedia.org/wiki/Gallium_arsenide

good luck
3Â¥2009-09-08 23:36:28
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû

gyliu

Ìú¸Ëľ³æ (Ö°Òµ×÷¼Ò)

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Сľ³æ(½ð±Ò+0.5):¸ø¸öºì°ü£¬Ð»Ð»»ØÌû½»Á÷
*data for   ICSD #107946
Coll Code   107946
Rec  Date   2006/10/01
Chem Name   Gallium Arsenide
Structured  Ga As
Sum         As1 Ga1
ANX         AX
D(calc)     5.32
Title       Thermal vibrations and bonding in Ga As: an extended-face crystal
            study
Author(s)   Stevenson, A.W.
Reference   Acta Crystallographica A (39,1983-)
            (1994), 50, 621-632
Unit Cell   5.652(1) 5.652(1) 5.652(1) 90. 90. 90.
Vol         180.55
Z           4
Space Group F -4 3 m
SG Number   216
Cryst Sys   cubic
Pearson     cF8
Wyckoff     c a
R Value     .007
Red Cell    F  3.996 3.996 3.996 60 60 60 45.138
Trans Red   0.500 0.500 0.000 / 0.000 0.500 0.500 / 0.500 0.000 0.500
Comments    Temperature in Kelvin: 296
            Structure type : ZnS(cF8)
            X-ray diffraction from single crystal
Atom  #   OX   SITE      x           y           z           SOF      H
Ga   1  +3    4 a   0           0           0              1.         0   
As   1  -3    4 c   0.25        0.25        0.25           1.         0   
*end for    ICSD #107946
4Â¥2009-09-09 08:59:26
ÒÑÔÄ   »Ø¸´´ËÂ¥   ¹Ø×¢TA ¸øTA·¢ÏûÏ¢ ËÍTAºì»¨ TAµÄ»ØÌû
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